Refrigerating apparatus



Get 6, 1931 J. G. KiNG 1,325,669

REFRIGERATING APPARATUS Original Filed Oct. 5, 1923 2 Sheets-Sheet 1 0&6, 1931.

2 Sheets-Sheet 2 Original Filed Oct. 3, 1923 315 m 26 532 265 E v 2:53, o 26 26 o 50 g o 61 o q f 3.6 o o o ncest JESSE G. KING, OF DAYTON, OHIO, ASSIGNCR, BY MESNE ASSIGNMENTS, T FRIGIDAIRE CORPORATION, A. CORPQRATION OF DELAWARE nnrnionnnrme arrana'rus original application filed October 3, 1923,, Serial No. 666,257. Divided and this application filed December 15, 1927. Serial No. 240,285.,

This invention relates to refrigerating apparatus, and particularly to apparatus for household use.

This is a divisional application of my application Serial No. 666,257, filed October 3,

' 1923, for Refrigerating apparatus.

An object of this invention is to provide for the economical and efficient construction of the cooling unit, and also to provide an adm justable support for the unit to adapt it to be installed in a refrigerator specially constrncted to receive the unit, or in the ordinary ice containing compartment of a refrigerator cabinet, so that an ice refrigerator can w be adapted for iceless refrigeration.

Further objects and advantages of the present invention will be apparent from the following description, reference being bad to the accompanying drawings, wherein'a. prego ferred. embodiment of the present invention is clearly shown.

In the drawings:

Fig. l is a sectional view through the ice compartment of a refrigerator showing the as cooling unit installed;

Fig. 2 is a fragmentary elevation of a re frigerator cabinet showing the door of the cooling compartment open and a cooling unit for iceless refrigeration installed within said an compartment;

Fig. 3 is a front elevation of the cooling unit on a larger scale with two ice trays removed from their shelves;

Fig, d is a fragmentary view partly in section, the section being taken on the line 4-4 of Fig, 3, v

Referring to the drawings, designates a refrigerator cabinet of the conventional type specially constructed for iceless refrigeration or to be converted from iccless refrigeration ordinarily used in homes. The cabinet 20 in cludes a compartment 21 adapted to contain ice and closed by a door 22. The cooling unit designated as a whole by numeral 23 is adapted to be installed in the compartment 21 and act as a substitute for a cake of ice, This unit is connected with refrigerating ap= paratus (not shown) located outside of the refrigerator. so The unit 23 includes a tank or header 2d which is connected by inlet pipe 25- and outlet pipe 26 with a refrigerating machine located outside of the refrigerator cabinet. These pipes are brought out from the cabinet lining 27 through a hole 28 and then down between the back wall 29 and the refrigerator lining 27 The pipe 26'includes coils 26?; which provide for refrigerating in addition to the cooling unit.

lhe tank 24 is connected with and supported by a plurality of cooling coils or loops 30 which are identical in contour and are connected.- with the tank in staggered relation by alternately reversing the coils. That is, considering that each coil includes vertically disposed branch portions or legs 31 and 32 joined by a horizontal oke portion 33, the branch portion 32 of one coil extends to the right of the tank 24, and the branch 32 of the next adjacent coil extends to the left. By virtue of this arrangement of the coils, two groups of coils are provided,

each group of coils having coil branches in spaced alignment, and the coils of one group alternate with the coils of the other group. Each group of coils in ludes at least one set of aligned straight branches, which are connected together in one plane, and both groups of branches are tied together by means which supports the ice tray drawers or sleeves. Thus a frame work'is provided by means of the groupsof coils and ice tray supports for supporting the expansion tank...

Each ice tray 34 is provided with a handle 35 and is slidable upon the rails 36 provided upon the bottom wall of a chamber which forms an ice tray shelf or sleeve 37.

The groups of coil branches 31 are clamped together in two substantiall vertical planes by means of tie members which include sleeve 37 and angle bars 38 and 39 attached to the sleeve 37 preferably by welding, and by means of clamping bars l0 and d1, Screws 42 pass through bar l0 ndare threaded into angle iron 38. Tightening screws e2 clamp one groupof coil branches 31 to angle bar 38. in like manner, screws s3 and bar ll clamp the other set of branches 31 to the angle bar 39. Since the cooling coils 30 are somewhat flexible, their set of branches 31 can be read ily brought into vertical alignment, and the set of branches 32 can take whatever position they will as the result of the clamping of the branches 31. It is apparent that the two series of branches provide vertical walls enclosing a central opening located below the expansion tank 24.'

The groups of coil branches 31 provide in effect walls of a freezing compartment or zone located between cooling coils and below the expansion tank 24, the bottom of this freezing compartment being provided by the yoke portions 33 of the coohng coils 30. This construction and arrangement can be obtained without materially distorting any of the coils because of the alternately reversed arrangement of the coils permitting the coil branches 32 to take up their positions free of restraint.

A support for the cooling unit is provided by two U-shaped members 45, the branches of which provide legs resting upon the bottom wall 46 of the ice compartment 21. The coil yokes 33 rest directly upon the U-shaped members 45. The U-shaped members 45 are attached, for example, by riveting to cross members 47 thereby providing a rectangular supporting platform. The coil yokes 33 are clamped against the U-shaped members 45 by means of a bar 48 which extends over the yoke portions 33, a bar 49 which extends under the cross pieces 47, and two bolts 50, each extending through one end of the bar 48 and one end of the bar 49 and engaged by a nut 51. Tightening the nuts 51 on the bolts 50 causes the bars 48 and 49 to be moved to gether, thereby clamping the yoke portions 33 firmly upon the horizontal portions of the U-shaped members 45.

In order to secure the cooling unit 23 in position Within the cooling compartment 21, each leg of the U-shaped members 45 is provided with a tapped hole for receiving a bolt 52 which may be turned so that its head will be pushed against the lining of the cooling compartment as shown in Fig. 2. In this manner the unit 23 is clamped between opposite walls of the compartment 21.

After the cooling unit has been installed within the compartment 21, the attachment of the pipes 25.and 26 to the tank 24 is made at the couplings 26a and 25a.

The cooling unit 23 supports a thermostat bulb attached to a sleeve 37, for example, by welding. After installing the unit 23, bulb 60 is attached by coupling 61 to a pi e 62 connected with a pressure responsive oevice for controlling the operation of the re frigerating apparatus. This bulb and method of control is disclosed more-fully in the copending application of Jesse G. King, He rial No. 670,359, filed October 23, 1923. Briefly, the bulb 60 contains fluid such as sulphur dioxide which expands as the temperature of the cooling unit rises, and causes the pressure responsive device to start the refrigerating'apparatus. When the temperature of the cooling unit decreases the fluid in bulb 60 contracts and the pressure diminishes resulting in stopping the refrigerating apparatus.

While I have described in detail the construction of my cooling unit, it is to be understood that the supporting means embodying my invention is intended to be used with any type of cooling unit for installing it in an ordinary ice refrigerator to adapt the refrigerator for iceless refrigeration. The cross pieces 47 and the bolts 52 have been shown as being placed underneath the cooling unit but it is to be understood that under certain conditions I may place members equivalent to these in other relation with the cooling unit. Under certain conditions the support may not rest on the floor at all but may engage with other walls of the refrigerator. Other extensible means may under certain conditions be substituted for the bolts, such means being capable of bearing against the walls of the refrigerator and may be secured to the walls of the refrigerator either by friction or by some positive securing means which under certain conditions may pierce the walls of the refrigerator.

\Vhile the form of embodiment of the invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

lVhat is claimed is as follows:

1. An iceless cooling unit having a pair of oppositely extensible members for aiding in fastening said unit within a refrigerator.

2. An iceless cooling unit adapted to be installed in a refrigerator having a pair of oppositely rigidly extensible members for aiding in fastening said unit in a refrigerator wthout puncturing the lining of said refrigerator.

3. An iceless cooling unit having a support clamped thereto for resting on the floor of a refrigerator, and extensible means for securing said unit in the refrigerator, said entensible means being attached to said support.

4. An iceless cooling unit having a sup port clamped thereto for resting on the floor of a refrigerator, and extensible screw means for securing said unit in the refrigerator, said extensible screw means being attached to said support.

5.'An iceless cooling unit having a support clamped thereto for resting on the floor of a refrigerator, and extensible means for securing said unit in the refrigerator, said extensible means being attached to said support and having relatively large bearing sur faces for securing said unit in said refrigerator without piercing the walls.

6. An iceless cooling unit having a support clamped thereto for resting on the floor of a refrigerator, and extensible screw means for securing said unit in the refrigerator, said extensible screw means being attached to said support and having relatively large bearing surfaces for securing said unit in said refrigerator without piercing the Walls.

In testimony whereof I hereto afliX my signature.

JESSE G. KING. 

